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Trava [24]
2 years ago
6

Simplify –3(x + 3) + 4x and do a step by step

Mathematics
1 answer:
natulia [17]2 years ago
7 0

Answer:

x-9

Step-by-step explanation:

-3(x+3)+4x

-3x-9+4x

-3x+4x-9

x-9

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If 3:y=18:24 find y.
VashaNatasha [74]

y = 4

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7 0
1 year ago
Write the quadratic function f(x) = (3-x)2 in standard form.
Nitella [24]

Answer:

y =  - 2x + 6

Step-by-step explanation:

since \: f(x) = y \\

then the equation reads:

y = (3 - x)2 \\ y = 6 - 2x \\

The standard form of an quadratic function is:

y = mx + c \\

So the answer is:

y = mx + c \\ y =  - 2x + 6

6 0
2 years ago
0.125 to the nearest thousandth
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A person is walking 3 miles per hour. What is their rate in feet per second? 4.4 feet per second 2.05 feet per second 7.9 feet p
Igoryamba
4.4 . 
there is 5280 feet per mile. Meaning there is 15840 feet in three miles. Divide 15840 feet by 60(number of minutes in an hour and you get 264 , which is how many feet per minute. Divide 264 by 60(number of seconds in a minute) and you get 4.4, the number of feet per second
5 0
3 years ago
Problem1 The behavior of a physical system can be described by the following first order differential equation: dy/dt=2y +t^2
daser333 [38]

Answer:

y = \dfrac{t^3e^{2t}}{3}+Ce^{2t}.

Step-by-step explanation:

Using first order linear differential equation:

\dfrac{\mathrm{d} y}{\mathrm{d} t} = 2y + t^2

\frac{\mathrm{d} y}{\mathrm{d} t} - 2y =t^2

finding integrating factor:

I.F = e^{\int -2dt}

I.F =e^{-2t}

now,

y = \dfrac{1}{IF}(\int t^2dt+ c )

y = \dfrac{1}{e^{-2t}}(\int t^2dt+ c )

y = \dfrac{t^3e^{2t}}{3}+Ce^{2t}

hence the solution is

y = \dfrac{t^3e^{2t}}{3}+Ce^{2t}

8 0
3 years ago
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